'One' in the Bible

I can pray this because his divine power has bestowed on us everything necessary for life and godliness through the rich knowledge of the one who called us by his own glory and excellence.

But concerning the one who lacks such things -- he is blind. That is to say, he is nearsighted, since he has forgotten about the cleansing of his past sins.

Now, dear friends, do not let this one thing escape your notice, that a single day is like a thousand years with the Lord and a thousand years are like a single day.